ci: diagnose site endpoint scheme (https/http)

Author: nichu42

.github/workflows/diag-scheme.yml

@@ -0,0 +1,31 @@
+name: Diagnose site endpoint scheme
+
+on:
+  workflow_dispatch:
+
+jobs:
+  diagnose:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Inspect endpoint value shape
+        env:
+          ENDPOINT: ${{ secrets.HOMEPAGE_BUNNY_S3_ENDPOINT }}
+          SHARE_ENDPOINT: ${{ secrets.BUNNY_S3_ENDPOINT }}
+        run: |
+          echo "site has https://: $( [[ "$ENDPOINT" == https://* ]] && echo YES || echo NO )"
+          echo "site has http://:  $( [[ "$ENDPOINT" == http://* ]] && echo YES || echo NO )"
+          echo "site length: ${#ENDPOINT}"
+          echo "share has https://: $( [[ "$SHARE_ENDPOINT" == https://* ]] && echo YES || echo NO )"
+          echo "share has http://:  $( [[ "$SHARE_ENDPOINT" == http://* ]] && echo YES || echo NO )"
+          echo "share length: ${#SHARE_ENDPOINT}"
+
+      - name: Test explicit https to site host
+        env:
+          ENDPOINT: ${{ secrets.HOMEPAGE_BUNNY_S3_ENDPOINT }}
+        run: |
+          HOST=$(echo "$ENDPOINT" | sed -E 's#^https?://##; s#[/:].*##')
+          echo "testing https://${HOST}/ ..."
+          timeout 30 curl -sv --max-time 25 "https://${HOST}/" 2>&1 | grep -E "Connected to|SSL connection|subjectAltName|verify result|HTTP/|error|could not|Failed" || echo "curl https FAILED"
+          echo "---"
+          echo "testing http://${HOST}/ ..."
+          timeout 30 curl -sv --max-time 25 "http://${HOST}/" 2>&1 | grep -E "Connected to|HTTP/|Location:|error|could not|Failed" || echo "curl http FAILED"